| Chemical origin of acid mine drainage and its computer simulation with Phreeqc——-A case study of Zibo coal mining district |
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| 作者姓名： | Yaoguo WU Zhaoli SHEN Zuoshen ZHONG |
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| 作者单位： | [1]Department of Applied Chemistry, Northwestern Polytechenical University, Xi＇an 710072, China [2]College of Water and Environmental Sciences, China University of Geosciences, Beijing 100083, China |
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| 摘 要： | Research on the origin of acid mine drainage （AMD） is helpful to find a way to avoid and remediate AMD and its pollution. AMD is mainly from pyrite （FeS2）-containing minerals （such as coal and ore） during mining process and reproduction, and is common and dangerous to water environment in the world. The results of research showed that ions of calcium and magnesium in AMD came mainly from calcite and dolomite. To my knowledge, other sources （such as chlorite） for the ions and their chemical origin were not studied. In this paper, the AMD in the Zibo coal-mining district as a case, its chemical characteristics and its origin were determined. And based on the analysis of the regional geological conditions, Phreeqc was used to stimulate the AMD＇s chemical origin. The results showed that acidification and neutralization are two processes, and the characteristics depended upon chemical reactions that occurred in the two processes. In the AMD, sulfate ion came from FeS2 and is an indicator of acid process, and ions of calcium and magnesium originated from calcite and chlorite and were indicators of neutral process.
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| 关 键 词： | 煤矿 矿山酸性排水 化学热力学 计算机模拟 环境管理 |
Chemical origin of acid mine drainage and its computer simulation with Phreeqc---A case study of Zibo coal mining district |
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| Yaoguo WU Zhaoli SHEN Zuoshen ZHONG.Chemical origin of acid mine drainage and its computer simulation with Phreeqc---A case study of Zibo coal mining district[J].Chinese Journal of Geochemistry,2006,25(B08):26-26. |
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